— Whole-longan valorisation · Est. 2025

Every part of the longan,
put to work.

We're a Cambodian venture turning the longan harvest from Pailin — fruit, pulp, and the seeds that the rest of the supply chain throws away — into food, cosmetic active ingredients, and water-treatment aids. Smallholder-first, research-grounded, built in Wageningen and rooted at home.

— Our story

We started with the fruit.
Then we looked at what was being thrown away.

Pailin produces some of the finest longan in Southeast Asia. In peak harvests, much of it doesn't reach a market — fruit goes unsold, prices for smallholder farmers collapse, and seeds (the hard black "dragon eye" inside every fruit) are discarded entirely.

PaiBloom began as a food-product venture: longan syrup, dried bites, herbal tea — direct ways to absorb that surplus and put more income back into farming households. As we worked the supply chain, we realised the seeds — the part nobody used — carry the most concentrated value in the fruit. Recent peer-reviewed research has demonstrated cosmetic-grade polyphenol extracts and an effective drinking-water coagulant aid, both derived from the seed.

We now run three connected workstreams from a single Pailin hub. The fruit feeds the food-product line. The seeds feed the cosmetic and water-aid lines. A digital and engagement layer connects sourcing, traceability, and communication across all of them. Three product families, one harvest, nothing wasted.

15–20%
of fresh longan fruit mass is seed — a fraction the supply chain currently treats as waste.
€6,000
secured to date — Wageningen Lizzy Grant 2025 + Food Systems Innovation Challenge.
2
peer-reviewed pathways anchoring the seed valorisation: Hong-In et al. (2021/2022); Aunkham et al. (2026).
1
processing hub in Pailin — designed for parallel fruit + seed lines, shared infrastructure, smallholder sourcing.

— How we got here

A short, honest chronology.

2024· founding

From a Cambodian household to Wageningen.

Alita Tithphit, growing up between Pailin's orchards and Phnom Penh's markets, brings the longan-waste problem to Wageningen. A food-technology student venture starts to take shape.

2025· first traction

Lizzy Grant 2025 & Food Systems Innovation Challenge.

PaiBloom secures €6,000 in non-dilutive funding from StartHub Wageningen and the Wageningen Food Systems Innovation Challenge — initial validation that the food-product line is worth building.

2025· the seed pivot

What if the waste is the value?

Working through Pailin's supply chain, the team realises that the longan seeds — discarded entirely by processors — carry concentrated polyphenols and a usable polysaccharide. Peer-reviewed work from Chiang Mai (Hong-In et al., 2021/2022) and Phayao (Aunkham et al., 2026) anchors two new product lines.

2026· parallel tracks

BiSC-E + Ecotrophelia, in parallel.

PaiBloom enters the BiSC-E 2026 competition with the seed-valorisation case (cosmetic active + water-aid coagulant), and Ecotrophelia 2026 with the longan-pulp food product. Same venture, two competition entries, three product families.

2026· next

Pilot in Pailin.

The next milestone is a small-scale processing pilot in Pailin Province, sourcing from a cooperative of smallholder growers and validating the cosmetic-line process end-to-end. Partners and a fifth team member (chemistry & cosmetic formulation) are welcome — see contact below.

— What we make

Three product families.
One harvest.

i.
Pulp · fresh harvest

Longan Fruit Products

Honest, traceable food & drink built around longan's natural sweetness. Designed to absorb peak-harvest surplus that would otherwise spoil, and to give Cambodian consumers a local alternative to imported sugary drinks.

  • Longan Herbal Syrup — natural sweetener & mixable base for healthier drinks.
  • Dried Longan Bites — chewy, school-friendly snacks, fully traceable.
  • Longan Herbal Tea — paired with local Cambodian herbs.
Active workstream · early product trials
ii.
Seed coat · polyphenol-rich

Cosmetic Active Ingredient

A bio-based skincare active extracted from the longan seed using a thermal-aging process that multiplies its key polyphenols. Targets the upcycled, natural-origin segment of the global cosmetic ingredient market.

  • Anti-aging activity — MMP-1 and hyaluronidase inhibition demonstrated.
  • Bio-ethyl-acetate extraction — sugar-mill-derived green solvent.
  • Three output formats — spray-dried powder, lamellar liquid crystals, hydrogel.
Lab-validated · pilot scale-up planned
iii.
Seed kernel · polysaccharide-rich

Water-Treatment Coagulant Aid

Longan Seed Polysaccharide (LSP) reduces the alum dose needed to clear turbid drinking water by roughly 5×. Built for rural Cambodian water systems and humanitarian deployment, not the boutique market.

  • 96.7% turbidity removal at 5× lower alum dose, as coagulant aid.
  • ~USD 0.30/kg production cost target — accessible by design.
  • Deployment via NGOs and rural WASH programs (e.g. ADB-funded).
Research-grounded · partnership-led rollout
Pillar i.

Longan fruit products.

Pulp · fresh harvest · consumer line

The food line absorbs ripe longan pulp that would otherwise go unsold at the orchard gate. Three product formats are in early development, designed for the Cambodian domestic market first and for Cambodian-diaspora retail second.

Longan herbal syrup

A concentrated longan syrup blended with local Cambodian herbs (lemongrass, pandan options under test). Designed as a mixable base for healthier soft drinks and as a natural sweetener that competes against imported sugar-heavy options.

Dried longan bites

Chewy, low-added-sugar snacks for school canteens and family pantries. Format pre-tested for shelf stability without refrigeration — important for the distribution geography we'll be working in.

Longan herbal tea

Dried longan blended with locally sourced Cambodian herbs. Functional positioning: warmth, restful sleep (longan's traditional Chinese medicine association), and a domestic substitute for imported herbal teas.

Workstream lead Zhi Xiu (Zoe) Yap & Martina Liu Cuellar De Artiach — Ecotrophelia 2026 entry
Pillar ii.

Cosmetic active ingredient.

Seed coat · polyphenol-rich · B2B ingredient

Whole longan seeds are thermally aged (70°C / 75% RH / 20 days) — a process that has been shown to amplify gallic and ellagic acid content roughly tenfold. The aged seeds are dried, milled, and extracted with bio-ethyl acetate (a green solvent that can be sourced from sugar-mill waste streams), then concentrated.

Spray-dried powder

A free-flowing, standardised powder for cosmetic formulators. Easy to integrate into creams, serums, and emulsions; long shelf life; familiar handling.

Lamellar liquid crystals (LLC)

A lipid-bilayer carrier system that mirrors skin's natural lamellar structure. Improves bioavailability and feel for premium-segment skincare brands.

Hydrogel (HGL)

A water-based gel format suited to mask and serum applications, leveraging the extract's affinity for hydrophilic systems.

Activity demonstrated in the source literature includes MMP-1 inhibition and hyaluronidase inhibition (the enzymatic pathways behind collagen breakdown and dermal hydration loss). Tyrosinase inhibition adds a pigmentation-modulation angle relevant to the brightening segment.

Target customers Upcycled-ingredient-conscious cosmetic brands (EU + APAC) · indie formulators · contract manufacturers
Pillar iii.

Water-treatment coagulant aid.

Seed kernel · polysaccharide-rich · humanitarian-grade

Longan Seed Polysaccharide (LSP) is extracted from the kernel fraction via cleaning, sun-drying, oven-drying, grinding, and sieving. At ~39% yield from the raw seed, it acts as a coagulant aid alongside conventional alum — not a replacement.

96.7% turbidity removal

Achieved at roughly 5× lower alum dose than alum alone, per Aunkham et al. (2026). The dose reduction is the operational win — less imported alum, lower sludge volume, simpler post-treatment.

~USD 0.30 / kg

Target production cost, designed to be deployable in rural water systems without subsidy distortion. Pricing this aggressively is the whole point — boutique cost structures would defeat the purpose.

NGO & donor channels

The commercial model treats LSP as a grant-funded deployment via rural WASH programmes (e.g. ADB Cambodia's USD 93.6M rural WASH initiative includes Pailin), not as a margin product.

Operating model Production at Pailin hub · distribution through NGO/ADB partners · cost-recovery pricing

— The science

We didn't make this up.
We're operationalising published research.

10×

Polyphenol uplift via thermal aging

Whole longan seeds aged at 70°C / 75% relative humidity for 20 days show approximately tenfold increases in gallic and ellagic acid — the actives that drive the cosmetic line's anti-aging activity.

Hong-In et al. (2021), Scientific Reports 11:15977

96.7%

Turbidity removal as coagulant aid

Longan Seed Polysaccharide achieves 96.7% turbidity removal with roughly 5× lower alum dose, at a production cost of around USD 0.30/kg — viable for rural water-treatment systems.

Aunkham et al. (2026), PLOS ONE 21(1):e0340397

2·9–3·2

Tyrosinase IC50 (mg/mL)

Longan extracts show measurable inhibition of tyrosinase — the enzyme behind skin pigmentation — and contain corilagin, gallic, and ellagic acid in the ranges that anchor PaiBloom's cosmetic-grade specification.

Rangkadilok et al. (2007), Food Chem. Toxicol. 45(2):328–336

— Process pathways

Two parallel seed-processing lines, one Pailin hub.

Whole-seed input to both lines. Allocation between cosmetic and water-aid based on commercial demand.

Cosmetic active line per Hong-In et al. (2021/2022)
01Cleaning
02Sorting
03Thermal aging
70°C / 75% RH / 20d
04Drying
50–60°C, <10% H₂O
05Milling
06Bio-ethyl-acetate
extraction (1:5)
07Filtration
08Vacuum
concentration
Spray-dried powder Lamellar liquid crystals Hydrogel
Water-aid LSP line per Aunkham et al. (2026)
01Cleaning
02Sun-drying
3 days
03Oven drying
60°C / 24h
04Grinding
050.5 mm sieving
shell removed
06LSP recovery
~39% raw-seed yield
Coagulant-aid powder

A worked example — 1,000 kg raw-seed basis, cosmetic line

Selected stages from the BiSC-E 2026 mass balance, traced to vacuum concentration. Full balance available on request.

Cleaning1,000 kg in · 980 kg out · 20 kg waste
Thermal aging980 kg in · 1,058.4 kg out (RH mass gain)
Drying1,058.4 kg in · 958.2 kg solids + 100.2 kg water
Extraction (1:5)958.2 kg solids + 4,791 kg solvent · 5,749.2 kg slurry
Filtration4,312.2 kg filtrate · 1,437 kg cake
Vacuum concentrationConcentrated extract + recovered solvent

LSP line, separately: at 1 kg raw-seed basis, 7.17% moisture, 39.23% LSP yield. The 0.6077 kg loss reflects shell removal during grinding/sieving, moisture, and preprocessing.

— Why it matters

The point isn't the product.
It's what the product makes possible back home.

i. — for farmers

A second buyer at the orchard gate

Smallholders in Pailin currently sell longan for as little as €0.40/kg, and seeds for nothing. A processing hub that pays for both gives farming households a stable second income line — and reduces the pressure to dump fruit at distressed prices in peak harvests.

ii. — for communities

Jobs that don't require leaving Pailin

Processing, sorting, drying, packing, quality control — most of the value chain sits at the hub, not in a distant capital. We're designing for the majority of those roles to go to women and youth from Pailin, with skill-building built into the operating model.

iii. — for the harvest

A whole-fruit answer to seasonal waste

Three product families pulling from one harvest means seasonal surplus has somewhere to go. The food line absorbs ripe pulp; the seed lines absorb what every line discards. The same trees, the same farmers, the same fruit — just less of it wasted.

iv. — for the land

Regenerative agroforestry, not extractive monoculture

Longan thrives in mixed-species systems alongside other tropical crops and native forest cover. We work with farmers who maintain or transition toward intercropped, shade-managed orchards — the kind of cultivation that preserves topsoil, supports pollinators, and stays viable across changing rainfall patterns. Organic conversion (CEDAC / Ecocert SE Asia) is part of the medium-term roadmap, not a launch claim.

v. — for trust

Traceability that pays back to the grower

Every batch carries a lot identifier that traces back to the cooperative and the season. Buyers can verify origin; growers can see what their fruit became. This is the layer Jimmy's workstream is building — Khmer-language batch coding, simple smartphone interfaces for cooperatives, no enterprise software in sight.

— Where we are

Pailin, by design.

Pailin sits on Cambodia's western border with Thailand — fertile, hilly, and historically isolated. It's a national centre of longan cultivation, and the place where the supply-chain problem PaiBloom addresses is most visible: world-class fruit, smallholder farmers, and post-harvest loss running far above what the value justifies.

Rather than ship raw seeds to a foreign processor, we're building the processing capacity in the province where the fruit grows. Three product lines, one hub, one community.

LocationPailin Province, western Cambodia
Crop focusLongan (Dimocarpus longan) — premium varieties
ModelSingle hub · parallel processing lines · smallholder sourcing
AmbitionPailin as origin region for an upcycled longan ingredient supply chain

Why Pailin, specifically.

The national longan reference

Pailin is one of the most-recognised longan-growing provinces in Cambodia. Its varieties are exported regionally and are part of the country's recognised tropical-fruit identity. Building at the origin region anchors PaiBloom in something that already exists, rather than inventing a new supply chain.

A seasonal economy with a clear gap

Peak harvest concentrates value into a short window. When buyers can't absorb supply quickly, prices crash at the farm gate. A processing hub that runs both during peak (fresh pulp) and counter-cyclically (dried seed inventory) flattens that curve for participating households.

Cooperative-friendly geography

Smallholder orchards in Pailin cluster geographically, which makes cooperative sourcing tractable. We design our sourcing model around farmer groups, not individual contracts — easier governance, lower per-grower transaction cost, more equitable price discovery.

Connection to broader programmes

The ADB's USD 93.6M Cambodia rural WASH initiative (announced Sept 2024) includes Pailin in scope. That programme is an obvious partner channel for the water-aid line, while EU Delegation and Wageningen agri-trade ties open conversations on the cosmetic and food sides. We're working with the institutional weather, not against it.

— Team

Eight students,
three workstreams, one venture.

PaiBloom runs three connected workstreams from Wageningen: a food & beverage line built on longan pulp, a research-grounded bio-actives line built on longan seeds (cosmetic active + water-treatment coagulant aid), and the digital, traceability, and engagement infrastructure that holds it together. Each person below sits primarily in one workstream; in practice, most of us overlap.

i.
Workstream — Food & beverage

Longan pulp products

AT

Alita Tithphit

Founder & Lead
BSc Food Technology · Wageningen
Minor: Business Management & Organisation
VH

Valerie Clarence Humardani

Process & Formulation
BSc Food Technology · Wageningen
ZY

Zhi Xiu (Zoe) Yap

Food Technologist
Food Technology · Wageningen
ML

Martina Liu Cuellar De Artiach

Food Technologist
Food Technology · Wageningen
ii.
Workstream — Bio-actives & process

Longan seed valorisation

AT

Alita Tithphit

Project Lead · BiSC-E 2026
Also in food workstream
MT

Mickey Tithphit

Operations & Sourcing
BSc Animal Sciences · Wageningen
RP

Rachel Pezij

Sustainability & LCA
BSc Environmental Sciences · Wageningen
VH

Valerie Clarence Humardani

Process & Formulation
Also in food workstream
iii.
Workstream — Digital, traceability & engagement

Infrastructure across the venture

JT

Jimmy Tithphit

Digital & Traceability
Website, batch-coding, supply-chain traceability
AT

Alexus Tithphit

Engagement · Chief Executive Intern
External comms, partnerships, organisational coordination
+

We're recruiting
Chemistry & cosmetic formulation focus, to round out the bio-actives workstream.
Get in touch below.

— With thanks to

Sai Lohitha — part of the founding team. Her early contributions helped shape what PaiBloom is today.

— Supported by & competing in

The Lizzy Grant 2025 StartHub Wageningen
Food Systems Innovation Challenge Wageningen University & Research
BiSC-E 2026 Bio-based Sustainable Industrial Chemistry — Seed valorisation
Ecotrophelia 2026 European student food innovation — Pulp products

— Get in touch

Investor, partner, supplier,
or just curious?

We're recruiting, partnering, and preparing for our 2026 pilot. If you work in upcycled cosmetic ingredients, rural water programmes, Cambodian agri-trade, or you're a student who wants in — please reach out.

We try to respond within a week.